20 Utility Patents
#7,281 in Tokyo
#36,582 in Japan
#169,030 in the World
Forward Citations = 6
Company Filing History:
Nippon Steel & Sumitomo Metal Corporation
Nippon Steel Corporation
Nippon Steel Sg Wire Co., Ltd.
4. 2 out of 1,229
Nhk Spring Co., Ltd.
5. 1 out of 555

where one patent can have more than one assignee
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